Ready for DC

We're making our last preparations tonight for DC. It's not often that I get this excited about a trip, but this is only the second time I've flown in my life (other than when I was like two years old). So, naturally, I'm getting a little nervous that everything will go right, like bags getting to the right place, and me having everything I need. Other than that little nervousness, I'm super pumped. Not only for Buzz, but just to get to see DC. This will be my first trip to anywhere on the east coast, let alone our nation's capital. I'm a huge history buff, so I'll probably spend quite a while in the Smithsonians. Anybody have some good ideas of places to visit, or great places to eat there? Let me know.